/* -*- c++ -*-
    Copyright (C) 2007 Vladimir Shabanov <vshabanoff@gmail.com>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef __OSGCAL__DEPTH_MESH_H__
#define __OSGCAL__DEPTH_MESH_H__

#include <osg/Geometry>

#include <osgCal/Export>

namespace osgCal
{
    class HardwareMesh; // forward

    /**
     * Submesh which is only draws depth part of specified hardware submesh.
     */
    class DepthMesh :  public /*osg::Drawable //*/osg::Geometry
    {
        public:
           
            DepthMesh( HardwareMesh* hw );

            virtual void drawImplementation(osg::RenderInfo& renderInfo) const;
            void update( bool deformed, bool changed );

            virtual void compileGLObjects(osg::RenderInfo& renderInfo) const;

            osg::BoundingBox computeBound() const;

            /**
             * See Mesh::supports() for the comments.
             */
            virtual bool supports( const AttributeFunctor& ) { return false; }

            const HardwareMesh* getHardwareMesh() const { return hwMesh; }

        private:

            HardwareMesh* hwMesh;

            // TODO: merge DepthMesh & HardwareMesh into one
            // class and move all shared part into other structure.
    };

}; //namespace osgCal

#endif
